Dear @Ka Ho Cheng,
Good day! Welcome to Microsoft Q&A forum!
Based on your description, I understand that you're trying to print barcode labels using Word and Excel through a mail merge, but the printed barcodes cannot be scanned, and you're looking for the cause of the issue or alternative methods.
I sincerely apologize for the inconvenience caused by this issue.
To make sure I fully understand what’s happening and pinpoint the cause of this, I’d like to gather just a few details about how the barcodes are being created and printed, so could you confirm the following information:
- How are you generating the barcode field in Excel or Word (for example, typing the values directly, using a formula, or applying the font after the merge)?
- What behavior do you see when you try to scan the printed label?
- Before printing, does the barcode appear clear and properly formed on screen? Does the barcode scan successfully when viewed on‑screen before printing?
- Are there any print scaling, resizing, or quality settings applied?
- Have the barcodes ever scanned successfully using this method, or is this the first attempt?
Your confirmation would be very helpful in ensuring you receive the most suitable support!
In the meantime, kindly try the following suggestions to check what might have caused the issue:
- Ensure your Barcode Text is properly formatted: For references:
- Code 39 Barcode FAQ
- Code 128 Barcode FAQ
- Note: Microsoft is providing this information as a convenience to you. The sites are not controlled by Microsoft. Microsoft cannot make any representations regarding the quality, safety, or suitability of any software or information found there. Please make sure that you completely understand the risk before retrieving any suggestions from the above link.
- Turn Off any scaling options:
- Make sure “Fit to Page,” “Scale to Paper Size,” or any auto‑resize features are disabled
- Barcodes must print at the exact width and height the symbology expects
- Print a single test Barcode before merging
- Kindly create one barcode manually in Word and print it
- If this scans, the issue is likely with the mail merge field formatting
- Try testing with a standards‑compliant font to see if the barcode can be scanned so that we can quickly rule out a font issue
I hope this information is helpful. Please follow these steps and let me know if it works for you. If not, we can work together to resolve this.
Please understand that our initial response does not always resolve the issue immediately. However, with your help and more detailed information, we can work together to find a solution.
Any updates you’re able to share would be really helpful. I appreciate your time and look forward to hearing how things are going!
Thank you for your time and patience.
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